Multiple vulnerabilities in arborist package for npm



Published: 2021-08-31 | Updated: 2022-03-11
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-39134
CVE-2021-39135
CWE-ID CWE-61
Exploitation vector Local
Public exploit N/A
Vulnerable software
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arborist
Web applications / Modules and components for CMS

Vendor npm Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) UNIX symbolic link following

EUVDB-ID: #VU61256

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39134

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

Exploit availability: No

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to a symlink following issue. A local attacker can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Successful exploitation of this vulnerability may result in privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

arborist: 0.0.0 - 2.8.1

External links

http://github.com/npm/arborist/security/advisories/GHSA-2h3h-q99f-3fhc
http://www.npmjs.com/package/@npmcli/arborist
http://www.oracle.com/security-alerts/cpuoct2021.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) UNIX symbolic link following

EUVDB-ID: #VU61257

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39135

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

Exploit availability: No

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to a symlink following issue. A local attacker can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Successful exploitation of this vulnerability may result in privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

arborist: 0.0.0 - 2.8.1

External links

http://github.com/npm/arborist/security/advisories/GHSA-gmw6-94gg-2rc2
http://www.npmjs.com/package/@npmcli/arborist
http://www.oracle.com/security-alerts/cpuoct2021.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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